Secondary battery and manufacturing method thereof

Abstract

Provided is a layer for preventing a short circuit between a positive electrode and a negative electrode in a solid battery using a layer containing a solid electrolyte. As the solid electrolyte between the positive electrode and the negative electrode, a layer containing a graphene compound is used. Lithium ions can pass through the layer containing the graphene compound. Lithium ions are added in advance in the layer containing the graphene compound. Specifically, a modifier is used, and a graphene compound chemically modified with a functional group such as ether and ester with an increased interlayer distance is used.

What is claimed is: 
     
         1 . A secondary battery comprising:
 a first electrode containing a positive electrode active material;   a second electrode containing a negative electrode active material; and   a layer containing a graphene compound,   wherein the layer containing a graphene compound has an ion conductivity and is configured to prevent a short circuit between the first electrode and the second electrode.